Chapter 12, Problem 10STP

To determine

To find: the expected times to get the vowel in spin.

Answer to Problem 10STP

She got $32$ times a vowel in spin.

Explanation of Solution

Given information:

From the figure provided in the question, it can be observed that there is two vowel and three constants.

Calculation: to find thetime, to get a vowel in spin find the probability to get a vowel in a one spin,

  $\text{probability}=\frac{2}{5}$

Now, multiply the total times spin to the probability,

  $\begin{array}{l}\frac{2}{5}\left(80\right)=\frac{160}{5}\text{ [multiply]}\\ \frac{2}{5}\left(80\right)=32\text{ [divide]}\end{array}$

Thus, she got $32$ times vowel in spin.